Reversing mechanism.



H. P. YOST. Eminem ncnmlsx. Arrrlloumn- Hmm nov. 4. 1m.

Patented Dec.22, 1908.

W-zznesss 'ffoflallI it lmay concern:

HENRY P. YOST, OF TEKNSA, MICHIGAN.

REVERSING- MECHISM.

application aies November '4, 1907. serai No. 400,457.

' Beit .known that I, HENRY P. Yosr, a citizen o f the United States, residing at Tekonsha, 1n the county-of Calhoun and. State of Michigan, have invented certain new and Iuseful Imlprovement's in Reversing Mechan- Abea full,clear, and exact description thereof,

do hereby declare the following to such as will enable others skilled in the art to *'"hich iti-[appertains to make and use the I he presentinvention is especially adapted vt'o lifting, hauling and dredging machines, traction engines, and to any and all kinds of machinery Where heavy loads are to be handled and Where it is often necessary to reverse and change the motion of the operating parts, and among other objects it is my purpose to provide a compensating or recoil gear so constructed and arranged that theusual concussion or strain eXertedfon such machinery will be reduced to a minimum and the lifeof wearing parts correspondingly increased. l

In ythe `drawings forming a part of this specification, Figure 1 represents a side view of my improved reversing mechanism with the intermediate reversing ear thrown at a point between the `opposite y-revoluble running ears, where it 1s `at a standstill. Fig. 2

- `is a p an view with the' intermediate revers ing gear in mesh with one of the driving gears.. Fig. 3 is a sideV elevation in part sec.-

. tion ofthe intermediate cushion-gear. Fig.

4 is 'a cross section of the intermediate cushion gear, and Fig. 5 is a detail section of the adjusting lever mechanism.

x spending parts in the different views.

A, represents a common framework, it beingundersto'od that any suitable construction adequate to the purpose can be en iployed.. vWithin this framework a mani driving shaft, 1, is journaled; this shaft is provided with the fixed gears 2 and 3. In parallel arrangement with the shaft .1, a secondary stud or shaft, 4, is tted, this also is fit-ted with gears, 5 and 6. The gears 2 and 5 are arranged te be in constant mesh, and, as is obvious, rotate in opposite directions. Journaled intermediate of the shafts 1 and 4 and at a point below their axles, a shaft, 7, is mounted, Upon this shaft a yoke, 8,1s supported, to the upper end of which a rod, 9, is attached. This rod can be arranged to be operated by the customary latch and quad- Specication of Letters Patent.

Patented se. 22, 1908.

rant, but to yinsure ease in manipulation Vand stability Vof fastening, El yhave provided a quick vor sharp pitch'worm,. 10 which operates within a corresponding-sleeve, 1v1, the

sleeve, 11, being fitted `within a yoke, 12, mounted in a bracket, `13, to the main frame.

To the outerextreinity of the sleeve, acrank or handle, 14, is fixed. Within the yoke, 8, the intermediate reversing gear, 115,- is mounted on the stud, 16. Thisstudalso carries a secondary gear, 17,' which in turn `Ineshes with a gear, 18. The gear, 17 being mounted in the yoke, 8, is adapted to play freely 'about the shaft, 7 as the-yoke is thrown to and from the gears 3 end in` the adjustment of the yoke 1n throwing' the intermediate gear, 15, into contact 'withkeith'elt of said gears. The ii'iterinediatelgear,v 1-5, isv formed with a webbed side, and yat uniform points within the rini thereof, depending lugs, 19, are provided. Through the hub 20, of this wheel, the hub, 21, of a disk, 22, is journaled. This disk is rovided with a rim, 23, coneentric with its liub and somewhat within its circuinference, the circumference of the disk being ada ted to play freely within the open side of lie gear, 15, as shown in Fig. 4. At equi-distant points and projecting from the rim, 23, lugs, 24, are formed; these lugs are adapted to fit between thev lugs, 19, of the gear portion, and'between the `lu s of the gear and disk, coil springs, 25, are tted, the space between the. rim, 23, and the gear rim, forming a chamber within which the springs are securely held in operative position. The gear '15 is loosely journaled on the stud, 16,

' f as also is the disk, 22; to this disk the gear, Like marks of reference refer to eorre- 17, is secured by bolts, 26.

ln operation it will be evident that when the gears 2 and 5 are ruiming, and the intermediate gear 15 is thrown in contact with either of the gears 3 or 6 through the medium of the shifting yoke, S, the intermediate gear communicating motive power to the gear 17 would cause the gear 18 to operate. AShould it be necessary to reverse the intermediate gear, 15, in order to change the direction of the run, all that would 'be necessary to do would be to rotate the sleeve, 11, by means of the hand crank, 14,in direction that would cause the shifting rod,'9, to throw the sudden concussion is avoided, the springs forming an elastic bearing between the lugs 19 of the gear l5 and the lugs 24 of the disk 22.

Having, therefore, set 'forth my invention, What' I claim as new and desireto secure by Letters Patent, is

-1. In a device of the class described, the combination of two op'positcly revoluble shafts and gears ixedly'mounted on said shafts, a yoke pivoted intermediate o'f said `shafts and in alinement with said gears, a gear mounted on the axle of said yoke, a gear mounted on a shaft Within said yoke, a secondary gear fitted on said raft, yielding members fitted between said gears, one of said gears adapted to mesh with the gear mounted on the axle of said yoke the other, or 'opposite gear, adapted to be brought into engagement with a gear on one or the other of said oppositelyrevoluble shafts, and means to shift said yoke to and from one shaft to another, as and for the purpose set forth. l

2. In a device of the class described,I a pivotally-supported yoke, a rod pivoted to said yoke, the opposite end of said rod forming a worm, a crank having a socket adapted to fit said worm, and a pivotally supported trunnioned yoke adapted to receive the socket of said crank, as and for the purpose ser'J forth.

3. In a device of the class described, the combination with two oppositely-revoluble shafts and fixed gears mounted on said shafts, of a yoke pivoted intermediate of said gears, a rod adapted to throw said yoke to and from one shaft to another, a gear axially mounted in said yoke, said gear having radially-arranged interiorly-projecting lugs extending from the rim thereof, a disk having an annular rim with radially-arranged, outwardly-projecting lugs, the annular rim of said disk adapted to fall Within the rim of said gear and form arc-shaped chambers between tlie lugs of the respective parts, coil springs fitted Within said chambers between said lugs, a gear secured to or forming a part with said disk, a gear journaled on the yaide of said yoke and. adapted to intermesh with the 'gear secured to or forming a part with said disk, substantially as and for the' purpose set forth.

HENRY P. YOST,

Witnesses:

. FRED. H. HEss,

. W. H. HOWARD. 

